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首页> 外文会议>International Conference on Manufacturing Science and Technology >Investigation of relation between Straightness and Cutting Force inCNC Turning Process
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Investigation of relation between Straightness and Cutting Force inCNC Turning Process

机译：CNC车削过程中直率与切削力的关系调查

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摘要

The objective of this research is to examine the relation between the straightness and the cutting force ratio during the CNC turning process. The cutting force is monitored and obtained by installing the dynamometer on the turret of CNC turning machine. The relation between the cutting force ratio and the straightness is investigated under the various cutting conditions, which are the cutting speed, the feed rate, the depth of cut, the tool nose radius and the rake angle. The experimentally obtained results showed that the straightness can be improved with an increase in cutting speed, tool nose radius and rake angle. The relation between the dynamic cutting force and straightness profile can be proved by checking the frequency of the cutting force in frequency domain with the use of the Fast Fourier Transform (FFT), which is the same as the straightness profile. Hence, the cutting force ratio can be used to predict the straightness during the cutting regardless of the cutting conditions. The cutting force ratio is proposed to predict the straightness during turning process by employing the exponential function for the sake of straightness. The multiple regression analysis has been utilized to calculate the regression coefficients of the in-process prediction of straightness model by using the least square method at 95% confident level. It has been proved by the cutting tests that the in-process straightness can be predicted during the cutting within ±10% measured straightness with the high accuracy of 91.85%.
机译：该研究的目的是在CNC转动过程中检查直线度和切削力比之间的关系。通过在CNC车削机的炮塔上安装测功机来监测和获得切割力。在各种切割条件下研究了切割力比和直线度之间的关系，这是切割速度，进给速度，切割深度，刀尖半径和耙角。实验所得到的结果表明，随着切割速度，刀尖半径和耙角的增加，可以改善直线度。通过使用快速傅里叶变换（FFT），可以通过检查频域中的切割力的频率来证明动态切割力和直线度轮廓之间的关系，其与直线曲线相同。因此，切割力比可用于预测切割过程中的直线，而不管切割条件如何。提出了切割力比来预测转动过程期间的直线，以便为直线效力采用指数函数。已经利用多元回归分析来计算直线模型的过程中的回归系数通过在95％的自信水平下使用最小二乘法。通过切割试验证明，在切割过程中可以预测工艺直线，在±10％的直线上以91.85％的高精度。

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